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    <title>Document</title>
    <script>
        //要求把数组中工资超过2000的删除
        var arr = [1500, 1200, 2000, 2100, 1800];
        var newArr = [];
        for(var i = 0; i < arr.length; i++){
            if(arr[i] < 2000){
               // newArr[newArr.length] = arr[i];
               newArr.push(arr[i]);
            }
        }
        console.log(newArr);

        //数组排序（冒泡排序）
        var arr1 = [13, 4, 77, 1, 7];
        arr1.sort(function(a, b){
            return a - b; //升序的顺序排列
            return b - a; //降序的顺序排列
        })
        console.log(arr1);
    </script>
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